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Finding the Fourth Proportional to 136,903.20, 205,306.20 and 94,783.20

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Solution

The fourth proportional to 136,903.20, 205,306.20 and 94,783.20 is: 142,141.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,903.20 : 205,306.20 = 94,783.20 : x
  2. Step 2: Convert to fraction form
    136,903.20/205,306.20 = 94,783.20/x
  3. Step 3: Cross multiply
    136,903.20x = 205,306.20 × 94,783.20
  4. Step 4: Simplify right side
    136,903.20x = 19,459,578,615.84
  5. Step 5: Solve for x
    x = 19,459,578,615.84/136,903.20
  6. Step 6: Final answer
    x = 142,141.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.